Role of Anterior Midcingulate Cortex in Self-Reward Representation and Reward Allocation Judgments within Social Context

In this study, we aimed to disentangle the neural correlates underlying reward processes and social decision-making since previous findings have been inconsistent. Specifically, we manipulated share sizes of dictator games (DG) and examined the brain activation in response to value of reward for the self/others without or within context using fMRI. Then, we collected data regarding willingness and preference for making these offers in a post-scan behavioral task. Furthermore, we examined how elicited neural activities vary with individual differences from the aspect of self-benefit, altruism, and reward distribution context.

本研究旨在解析奖励过程与社会决策背后的神经关联，鉴于先前的研究结果并不一致。具体而言，我们操控了独裁者游戏（DG）的共享份额，并利用功能性磁共振成像（fMRI）技术，研究了个体在无情境或情境中，对自身/他人奖励价值的脑部激活反应。随后，我们在扫描后通过行为任务收集了个体进行此类提议的意愿和偏好数据。此外，我们还从自我利益、利他主义以及奖励分配情境等方面，探讨了所引发的神经活动如何因个体差异而异。